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점박이응애(Tetranichus urticae), 목화진딧물(Aphis gossypii)과복숭아혹진딧물(Myzus persicae)에 대한 은행잎 추출물의살충 및 기피효과
이인화,설명수,박종대 한국응용생명화학회 2005 Journal of Applied Biological Chemistry (J. Appl. Vol.48 No.2
To overcome the problems associated with chemical pesticides, biological pest controls agent extracted from Ginkgo biloba was studied. Insecticidal activities components in Ginkgo biloba extracts were analyzed using high performance liquid chromatography (HPLC). This results of HPLC analysis, GG-W80 were included bilobalide 611 µg/kg, ginkgolide A 37 µg/kg and ginkgolide B 243 µg/kg, while YG-W80 were included bilobalide 214 µg/kg and ginkgolide B 46 µg/kg. The biological activity of Ginkgo biloba extracts were conducted to repellent and pesticidial effect of Tetranichus urticae, Aphis gossypii and Myzus persicae treated with Ginkgo biloba leaves extracts. Mortalities of adult T. urticae to green Ginkgo biloba extracts (GG-W80) and yellow Ginkgo biloba extracts (YG-W80) were shown 98.3% and 20.0%, respectively. From these results, terpenes components in Ginkgo biloba extracts could be use for biological controls for T. urticae. 천연식물자원으로부터 생물농약을 개발하기 위하여 점박이응애(Tetranichus urticae), 목화진딧물(Aphis gossypii)과 복숭아혹진딧물(Myzus persicae)에 대해 푸른은행잎 추출물(GG-W80)과 노란은행잎 추출물(YG-W80)의 살충효과와 기피효과를 leaf disk법과 유묘검정법에 의해 조사하였다. 점박이응애에 대한 살충효과는 GG-W80이 98.3%로 YG-W80의 20.0%보다 우수하였다. 점박이응애에 강한 살충효과를 보이는 생리활성물질은 high performance liquid chromatography(HPLC)를 이용해 동정하였다. 푸른은행잎 추출물에서는 각각 bilobalide 611 µg/kg, ginkgolide A 37 µg/kg와 ginkgolide B 243 µg/kg이 동정되었으며, 노란은행잎 추출물에서는 bilobalide 214 µg/kg와 ginkgolide B 46 µg/kg 이 동정되었으나 ginkgolide A는 확인되지 않았다. 이상의 결과는 은행잎에 존재하는 terpene계 화합물인 bilobalide와 ginkgolide A, B가 점박이응애에 살충력을 갖고 있음을 알수 있으며, 이들 성분을 포함한 은행잎 추출물이 점박이응애에 대한생물학적 방제 가능성을 가지고 있음을 시사하였다.
토양세척법에 의한 클레이사격장 납 오염토양의 정화에 관한 연구
이인화,설명수,Lee, In-Hwa,Seol, Myung-Soo 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.5
For an efficient remediation of Pb-contaminated soil (S-1) in a clay shooting range, a soil washing test was performed with mineral acid, organic acid, chelating agent, and chloride. The Pb extraction efficiency of extractant (0.1 M) used in the washing test showed the order of HCl > $Na_2$-EDTA > NTA > DTPA > citric acid > malic acid > succinic acid > acetic acid > $CaCl_2$ > $MgCl_2$, for S-1 soil. As compared to initial Pb concentration, extraction efficiency by the concentration of extractant was 93.35%, 80.80%, 73.92%, and 24.57% in S-1 soil for HCl (0.5 M, pH 1.10), $Na_2$-EDTA (0.01 M, pH 3.99), citric acid (0.5 M, pH 1.27), and $MgCl_2$ (0.1 M, pH 8.82), respectively. S-1 soil had 56.83% of residue form and 43.17% of non-residue form (18.04% of exchangeable form), respectively. Although the concentrations of these fractions sharply decreased after HCl washing, since the exchangeable forms with relatively large mobility are still distributed as high as 18.78% (to Pb total content in residual soils) in S-1 soil, it is necessary to devise a proper management plan for residual soils after soil washing application.
토양세척법에 의한 폐탄처리장 중금속(Cd,Cu,Zn)오염토양의 정화에 관한 연구
김영석 ( Young Seok Kim ),설명수 ( Myung Soo Seol ),이인화 ( In Hwa Lee ) 조선대학교 공학기술연구원 2010 공학기술논문지 Vol.3 No.4
For an effcient remediation of heavy metals(Cd, Cu, Zn) contaminated soil(S-1) in open burning and open detonation(OBOD) site and artificially contaminated soil(S-2) with reagent of Cd(NO3), Cu(NO3) and Zn(NO3), a soil washing test was performed with mineral acid, organic acid, chelating agent, and chloride. As a result of determining extraction efficiency by various extractants, 0.5 M HC1 had the highest extraction efficiency of Cd, Cu, and Zn from OBOD site soil(S-1) and artificially contaminated soil(S-2), showing 92.16, 89.14, and 56.31%(S-1), 95.12, 90.49, 83.24%(S-2), respectively. As a result of examining extraction efficiency by presence form of heavy metals, presence form of heavy metal was confirmed to be one of important influential factors along with extraction efficiency of detrital content in selecting a extractant. Also, due to a content increase of specific bonding forms of heavy metals observed in residual soils after extraction, two-stage repeated soil washing and stabilization of residual soils are needed for exchangeable forms having relatively easy mobilities.